Tiffany "Pennsatucky" Doggett (Taryn Manning) is a meth-addicted born-again Christian who is not above attacking fellow inmates, including Piper. In season two she becomes less devout.

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'Orange Is the New Black' cast16 photos

Aleida Diaz (Elizabeth Rodriguez) is Daya's mother. Doing time for drug charges, she appears to not love her daughter initially but is later revealed to be protective of her.

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'Orange Is the New Black' cast16 photos

Jason Biggs plays Larry Bloom, a journalist and Chapman's (formerly) doting fiancé. He stood by her in season one even when the more sordid details of her past were revealed but becomes increasingly disenchanted and eventually exploits her prison sentence to bolster his career.

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'Orange Is the New Black' cast16 photos

Pablo Schreiber plays corrupt prison guard George Mendez, better known as Pornstache (one guess why). He breaks all the rules, from smuggling drugs into the prison to having sex with inmates. In season one, he is suspended without pay for his actions.

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'Orange Is the New Black' cast16 photos

Lorraine Toussaint joined the cast in season two as Yvonne "Vee" Parker, shown here with Gloria. Former drug runner Vee clashes with the other inmates, including Red.

Birbiglia, whose 2012 film "Sleepwalk With Me" adapted from his one-man show was critically acclaimed, has been on a roll lately with his career. He appeared in the 2014 film "The Fault in Our Stars," and will next be seen in the film reboot of the musical "Annie," starring Quvenzhane Wallis, Jamie Foxx and Cameron Diaz.

No details have been released about Birbiglia's character as the show maintains a strict level of secrecy. But showrunner Jenji Kohan told THR in an earlier interview that the next season will be "about faith, to a certain extent."